Presentation Information
[R6P-02]Zircon growth process in granitic pluton by 3D cathodoluminescence patterns, U–Pb ages, titanium concentration, and Th/U ratios: Case study of the Okueyama granite, Kyushu, Japan
*Takashi Yuguchi1, Daichi Itoh1, Tatsunori Yokoyama2, Shuhei Sakata3, Satoshi Suzuki1, Yasuhiro Ogita2, Koshi Yagi4, Takumi Imura1, Satoko Motai1, Takeshi Ohno5 (1. Yamagata Univ. , 2. JAEA, 3. Univ. Tokyo, 4. Hiruzen Institute, 5. Gakushuin Univ.)
Keywords:
3D CL pattern,Zircon U–Pb dating,Titanium concentration,Th/U ratio,Okueyama granite
This study proposes a new method for elucidating zircon growth processes in the Okueyama granitic pluton, Kyushu, Japan. Our method, which combines 3D growth patterns, U–Pb ages, titanium concentration, and Th/U ratios, contributes to the petrology and mineralogy to understand the growth of zircon crystals within a magma chamber. The simultaneous determination of zircon U–Pb ages and Ti concentrations in the granite also enable us to associate Th/U ratio with the crystallization temperature.
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